[ 4 3 
Observat ions. 
I. The Proportions of the feveral Ingredients here fet 
down, I have found, by repeated Trials, to be 
the beft. Five Pounds of Alkali Salt are thus ab- 
folutdy neccffary to diilolve One Pound of Sul- 
phur ; tho\ when Quick- lime is ufed, as here fpe- 
cified, Four Pounds and an half of fixed Salt are 
fufficient ; or even Four Pounds, if the Quick- 
lime be very good and ftrong : So much doth the 
Lime ftrengthen the Lixivium, or enable it to dif- 
foive the Sulphur. 
II. Thefe Two Proceffes differ fomewhat confidera- 
bly, as to the Quantity and Quality, both of the 
Spirit and Caput moriuum they afford. The Spi- 
rit made with Lime is lefs in Quantity, but fpe- 
cifically heavier, and yet more volatile, than the 
other : And the Caput mortuum with Lime is 
much whiter, purer, and fitter for making the Tar- 
tarus 'vitriolatus , than that made without Lime. 
III. By mixing a Pound of fixed Alkali with the 
Sulphur at firft, boiling them a little, and filtring 
the Liquor, then adding Two Pounds more of the 
Salt along with Two Pounds of Lime, I have 
found, that the Sulphur fooner diffolves, than if I 
put the whole Quantity in at once ; and thus, after 
the fecond Filtration, I put in the reft of the Salt 
and Lime, till all the Sulphur is diffolvedj as 
finding this the readier Way to perfed the So- 
lution. 
IV. In the Diftillation, a little of the Sulphur will 
fomerimes fublime into the Neck of the Retort j 
and this feems owing cither to making the Fire 
too 
